Pre-Calculus

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In a survey of 2001 people, 52% did not give another person
In a survey of 2001 people, 52% did not give another person a hug because they are an introvert. Test that claim ( majority of people did not give a hug because there are an introvert)some steps… read more
Kofi
PhD in Statistics
Ph.D.
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We want to conduct a hypothesis test of the claim that for
We want to conduct a hypothesis test of the claim that for middle-aged adults the population mean of their cholesterol levels is less than 194.9. We choose a random sample of such levels. The sample h… read more
rajeevanpillai
Master's Degree
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We want to conduct a hypothesis test of the claim that the
We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 28.6 words per minute. So, we choose a random sample of students' reading s… read more
rajeevanpillai
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The depth of the snow in my yard is normally distributed,
The depth of the snow in my yard is normally distributed, with a mean of 2.5 inches and a standard deviation of 0.25 inches.What value is one standard deviation below the mean? in inchesWhat value is … read more
DebdattaBhattacharya
Doctoral Degree
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A quick survey of peanut butter prices had standard
A quick survey of peanut butter prices had standard deviation and mean of \$0.26 and \$3.68, respectively. Compute the area for a peanut butter jar costing less than \$3.50.… read more
DebdattaBhattacharya
Doctoral Degree
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Answer the following questions using the z-score chart or by
Answer the following questions using the z-score chart or by using a spreadsheet.5. For a mean of 153 and standard deviation of 25, find P of 130 is less or equal to X is less or equal to 170. 6. IQ s… read more
R.R. Jha
Bachelor's Degree
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COLLEGE STATISTICS PROBLEM A community college Math
COLLEGE STATISTICS PROBLEMA community college Math instructor feels that the average age of community college students decreased since they started teaching 25 years ago. Looking up data from the year… read more
Kofi
PhD in Statistics
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Question 1 Assume that the weight loss first month
Question 1 Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform dis… read more
Ryan
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18. Assume that a sample is used to estimate a population mean
18. Assume that a sample is used to estimate a population mean mu. Use the given confidence level and sample data to find the margin of error. Assume that the sample is a simple random sample and the … read more
Chirag
Master's Degree
10,329 satisfied customers
"For John Only " Hi John.. I noticed you have answered
"For John Only " Hi John.. I noticed you have answered similiar questions to the ones I would like for you to help me with. Hopefully you will be able to. 1. The commissioner of the state police is re… read more
Math-John
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FOR SCOTT ONLY, Scott think you can have this for me today?
FOR SCOTT ONLY, Scott think you can have this for me today? Seems pretty simple just matching things up...Also are you free tonight to do the math lab stuff for this week same time as usual like 6:15 … read more
Scott
Master's Degree
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1) If n = 100 and p = 0.02 in a binomial experiment, does
1) If n = 100 and p = 0.02 in a binomial experiment, does this satisfy the rule for a normal approximation? Why or why not? 2) Find the z-score for the standard normal distribution where: P(z 47. 2. F… read more
Ryan
Bachelor's Degree
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For a normal distribution find a value of Z such that 10% of
For a normal distribution find a value of Z such that 10% of the total are under the normal curve is to the right of Z....Z= Determine the value of Z such that 50% of the area under the normal curve i… read more
Stevewh
Teacher
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What is the mean annual snowfall during 49 randomly picked years?
Solve the problem. The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 94 inches, and a standard deviation of 14 inches. What is the probability that the … read more
Chirag
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Consider a normal population with µ = 25 and σ = 7.0.(A)
Consider a normal population with µ = 25 and σ = 7.0. (A) Calculate the standard score for a value x of 22. (B) Calculate the standard score for a randomly selected sample of 45 with = 22. (C) Explain… read more
Chirag
Master's Degree
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The specifications call for a shaft to be 1.000 inch in diameter.
The specifications call for a shaft to be 1.000 inch in diameter. The acceptable tolerances are +/- 0.005 inches. By doing a process study, you have determined that the average output of diameter is 1… read more
Chirag
Master's Degree
10,329 satisfied customers
Given that x is a normally distributed random variable with
Given that x is a normally distributed random variable with a mean of 28 and a standard deviation of 7, find the following probability: P(x < 28)… read more
Stevewh
Teacher
Bachelor's Degree
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The amount of time spent by North American adults watching television
The amount of time spent by North American adults watching television per day is normally distributed with a mean of 6 hours and a standard deviation of 1.5 hours. a) What is the probability that a ra… read more
R.R. Jha
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